WATCH: Camilla Belle and Her Trainer Share the Secrets to Her Killer Body

“Her workouts have always been very varied and very different,” Belle tells PEOPLE. “That’s what I really love about it.”

“I do Pilates or SoulCycle or a bunch of different things so then with that, she’ll incorporate that into her training as well. So we’ll do one day really more with weights, another day with TRX, another day with more boxing, so in that sense it makes you an overall more fit person.”

Hansen put Belle through a four-move workout that anyone can do – all you need are TRX straps, two free weights, and a mat.

1. Single leg squats

“We’re going to do a two-part movement. I’m going to have her move into a single-leg squat, so coming down into parallel, driving up through her heel, and then nice and long with the arms, and squeezing that glute,” Hansen explains. Do this for 10 reps on each side, and think about spreading your toes as a stabilizer and focus on your breathing.

“Squats are always fantastic because you know they’re really working, and they hurt after many repetitions,” Belle says. “But you know they’re going to work the next day,” she laughs.

2. Plank variation

“Our feet are about hip distance, and I’m going to have you lower down onto your forearms, and then placing one hand, and then the other, back up to the top. Remember each time you come up to alternate the left and right hands.” Keep your legs rigid throughout the plank, and push up with your hands as you do the movement for a full minute. This strengthens the core and arms.

“Think yoga warrior 2 [pose], so we’re going to place one foot facing in the direction we’re looking, and the other at about 45 degrees. Then we’re going to bring the weights up, and we’re going to drift forward a little bit, and bring this arm down onto our thigh. From here, give me a row down, and coming up twisting through the torso.” Do 20 reps, and then switch to the other side.

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4. TRX rows

“I want you guys to bring your palms facing each other, and we’re going to bring the chest into the straps, and release all the way up.” Do this for 15 reps.

To make it easier, walk your feet away from the straps. But Hansen has Belle move in closer for a tougher movement. “As you can see, she’s a lot lower now,” Hansen says. “And it’s a lot harder now!” Belle laughs.